侨居甲国的中国公民田某在乙国旅行时遇车祸身亡。其生前在丙国某银行寄存有价值10万美元

我国的舟山渔场每年都有一段时间的“休渔期”。其主要原因是( )。

A．舟山渔场附近海域污染越来越严重，以致鱼量越来越少

B．鱼类每年有一个集中的产卵期

C．舟山渔场因捕鱼过量，致使目前已无鱼可捕

D．那段时期沿海地区台风活动频繁，为渔民安全考虑，因此不让他们出海捕鱼

Large parts of the world have not enjoyed the remarkable global progress in health conditions that have taken place over the past century. Indeed, millions of deaths in impoverished nations are avoidable with prevention and treatment options that the rich world already uses. This year, 10 million children will die in low and middle income countries. If child death rates were the same as those in developed countries this figure would be lower than 1 million. Conversely, if child death rates were those of rich countries just 100 years ago, the figure would be 30 million. Today’s tools for improving health are so powerful and inexpensive that health conditions could be reasonably good even in poor countries if policy makers spent even relatively little in the right places.

Recent research for the Copenhagen Consensus identifies several highly cost-effective options that would tackle some of the planet’s most urgent health problems. The most promising investment is in tuberculosis treatment. Some 90 percent of the 1.6 million tuberculosis deaths in 2003 occurred in low-and middle-income countries. Because tuberculosis affects working-age people, it can be a trigger of household poverty. The cornerstone of control is prompt treatment using first-line drugs, which doesn’t require a sophisticated health system. Spending $1 billion on tuberculosis treatment in a year would save 1 million lives. Because good health accompanies higher levels of national economic welfare in the long run, the economic benefits are worth $ 30 billion.

The second most cost-effective investment is tackling heart disease. Heart disease might not seem like a pressing issue for poor nations, but it represents more than a quarter of their death toll. Measures to reduce risk factors other than smoking — high intake or saturated animal fat, obesity, binge drinking of. alcohol, physical inactivity, and low fruit and vegetable consumption — have had little success. Treating acute heart attacks with inexpensive drugs is, however, cost-effective. Spending $ 200 million could avert several hundred thousand deaths, yielding benefits that are 25 times higher than costs.

The third option is prevention and treatment of malaria. A billion dollars would expand the provision of insecticide-treated bed-nets and facilitate provision of highly effective treatment. This would save more than a million child deaths and produce economic benefits worth $ 20 billion.

The fourth alternative for policymakers is to focus on child health initiatives. The best measures are familiar ones expanding immunization coverage, promoting breastfeeding, increasing the use of simple and cheap treatments for diarrhea and childhood pneumonia, and so on.

Even if the costs of all these initiatives were two or three times higher than we estimate, these efforts would still provide amazing opportunities to reduce health inequality and do good in the world.

Over the past century, the child death rates have（）.

A．climbed steadily in impoverished countries

B．dropped remarkably in developed countries

C．fluctuated wildly in low-income countries

D．remained stable in middle-income countries

（4分）放射性元素每秒有一个原子核发生衰变时，其放射性活度即为1贝可勒尔。是核电站中核反应的副产物，它可以衰变成，半衰期为8天。福岛核电站泄漏出的放射性物质中就含有，当地政府在某次检测中发现空气样品的放射性活度为本国安全标准值的4倍。 则一个核中有_______个中子、衰变成时放出的粒子为_______粒子。至少经过_______天，该空气样品中的放射性活度才会达到本国安全标准值。

嵌入式SQL语句中可以使用( )来输入或输出数据。

A．主变量

B．输入主变量

C．输出主变量

D．一般变量

什么是显微镜的分辨本领（分辨能力、分辨率）？